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RV Inverter Guide: Modified vs Pure Sine Wave - Safe Power
Solar Batteries Medium 4-6 hours for inverter replacement 326 👍 1

RV Inverter Guide: Modified vs Pure Sine Wave - Safe Power

My multimeter's out and I'm ready to tackle this RV electrical mess myself — pretty sure the inverter's the culprit but need to know where to start. I have a 2000 Winnebago Ultimate Advantage with four deep cycle house batteries and recently installed a Xantrex 758 inverter to replace my old Freedom 15 unit. The first time I tried using the inverter power while unplugged from shore power, something very strange happened - a hair dryer in the bathroom started running by itself and wouldn't shut off when I tried the switch. I had to unplug it, and the handle was warm. The hair dryer appears to be ruined now.

When I bought the Xantrex 758, I paid around $725 for what I thought was a good unit, but I'm now learning there's a difference between modified sine wave and pure sine wave inverters. I wasn't aware of this distinction when I made the purchase, and it turns out the 758 is a modified sine wave unit. I've since heard that modern electronics, especially things like residential refrigerators, computers, and sensitive electronic components, can be damaged by modified sine wave power.

I'm really concerned about potentially damaging my new residential refrigerator, stereo system, and computer equipment. Should I be worried about using this modified sine wave inverter with modern RV electronics? Is the hair dryer incident a sign that I need to upgrade to a pure sine wave unit, or are there other factors that could have caused this problem? I'm trying to understand if my current setup is putting my expensive electronics at risk. …more
RV DC Electrical System: Expert Guide to 12 Volt Systems
Electrical Medium 30 min read 182 👍

RV DC Electrical System: Expert Guide to 12 Volt Systems

Opened my RV this morning to find the 12V system going haywire — lights dimming randomly, fans slowing down, and the inverter shutting off despite full batteries.

Specifically, I need to understand the fundamentals of RV batteries - different types, proper sizing, charging requirements, and maintenance. I'm also confused about DC wiring best practices, what gauge wire to use for different applications, how to properly route and protect circuits, and where fuses and breakers should go. Voltage monitoring is another area where I'm lost - I see all these battery monitors and don't know what I actually need or how to interpret the readings.

I'm also planning some system upgrades down the road like adding solar or upgrading to lithium batteries, so I'd love to understand how all these components work together and what I need to consider for future modifications. Is there a comprehensive resource that covers all aspects of RV DC electrical systems from batteries and wiring through monitoring and upgrades? …more
How to Remove Firefly RV Control Panel: Complete DIY Guide (2024)
General Hard 45-60 min 177 👍

How to Remove Firefly RV Control Panel: Complete DIY Guide (2024)

Our 2019 Fleetwood Discovery LXE has a malfunctioning Firefly multiplex control panel that needs to be completely removed. I've been putting this off for months because I keep hearing horror stories about people cracking their panels or damaging the surrounding woodwork during removal.

I need to access the back of the unit for some electrical work, but I'm honestly terrified of breaking something expensive. The panel seems to be mounted flush with no obvious screws or clips visible from the front. I've searched everywhere but can't find a complete walkthrough that covers the preparation, actual removal process, and how to get everything back together properly.

Can someone please provide a detailed DIY guide that covers all the steps? I'm willing to take my time and do this right - I just need to know the proper technique so I don't end up with a broken control panel or damaged wall. …more
RV Inverter Beeping 3 Times Then Shutting Off: Complete Troubleshooting Guide
Solar Batteries Medium 45 minutes 173 👍

RV Inverter Beeping 3 Times Then Shutting Off: Complete Troubleshooting Guide

Standing next to my RV watching what started as occasional inverter beeps last month escalate into exactly three beeps and complete shutdown after just minutes. My multimeter shows the batteries at 12.8V when I check them, so they seem fine.

I'm worried there might be something more serious going on that I'm missing. Could this be a safety issue? What would cause an inverter to shut itself off like this even when the battery voltage looks normal? I don't want to keep trying to restart it if there's a risk of damaging the system or creating a safety hazard. …more
RV Battery Draining Overnight? Find & Fix Parasitic Drain
Solar Batteries Medium 2-4 hours 168 👍

RV Battery Draining Overnight? Find & Fix Parasitic Drain

The day after I installed that new solar charge controller last month, my RV batteries started mysteriously draining from fully charged to completely dead overnight. I've already confirmed that all visible lights, fans, and appliances are turned off, and I've switched off the main interior power, but something is still drawing power continuously. I understand this is likely a parasitic drain where some component or circuit is staying energized when it shouldn't be, but I'm not sure how to systematically track down which specific circuit is causing the problem. I have a basic multimeter but I'm not entirely sure about the proper methodology for testing each circuit individually to isolate where exactly the power draw is coming from. What's the step-by-step process for using a multimeter to methodically work through the electrical system, starting from the main disconnect and testing individual fuses or circuits until I can pinpoint the exact source of this parasitic drain? …more
Ford E450 Inertia Switch Location Guide - Find Your RV's Fuel Cutoff Reset Point
Engine Medium 2-3 hours 158 👍

Ford E450 Inertia Switch Location Guide - Find Your RV's Fuel Cutoff Reset Point

Every Ford E450 I've worked on had the inertia switch behind the driver's panel — but my 2011 Freedom Elite 32r has it hidden somewhere completely different. The engine is experiencing what appears to be fuel delivery issues after a minor fender bender, and I suspect the inertia switch may have been triggered and needs to be reset.

I've already done extensive searching in the typical locations - removed both driver and passenger side kick panels completely, pulled out the glove box, and even partially disassembled sections of the dashboard. Despite checking all these common spots where Ford usually places these switches, I'm coming up empty-handed.

Could the switch be integrated into another component on this particular year and model? Are there any alternative locations specific to the E450 chassis or Freedom Elite configuration that I should be checking? I'm also wondering if some models of this year might not have a traditional standalone inertia switch at all. …more

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How to Test RV Door Magnetic Switch - Electric Steps Fix
Exterior Medium 30-45 minutes 148 👍

How to Test RV Door Magnetic Switch - Electric Steps Fix

Three steps this morning to my RV and noticed my electric steps weren't extending like they did perfectly fine yesterday. I've already verified that I have 12VDC at the 4-pin connector, and I even tried swapping in a different control module, but still nothing happens when I open the door.

Everything points to the door magnetic switch being the issue, but I'm honestly nervous about testing electrical components - I don't want to damage anything or create a safety hazard. Is there a safe way to test the magnetic switch with a multimeter? I want to make sure I'm doing this right before I start poking around with test leads. …more
Installing a Rear Camera on Your Fifth Wheel RV: Complete Guide
Appliances Medium 3-4 hours 146 👍

Installing a Rear Camera on Your Fifth Wheel RV: Complete Guide

I spent way too much time backing into spots blind, so I grabbed my tools and I'm ready to install a rear camera system on my fifth wheel myself — just need to know the best place to start. I keep hearing horror stories about people drilling holes in the wrong spots or having wiring issues that cause leaks or electrical problems.

I'm torn between wireless and wired systems - which is actually safer to install? And I'm terrified about where to mount the camera without damaging my RV's structure or creating water intrusion issues. Should it go at the top center or would a corner placement be less risky?

I've been looking at brands like Furrion, Haloview, and Rear View Safety, but I need to know which ones are most reliable and forgiving for a cautious DIYer. Most importantly, how do I run cables safely without creating new holes that could leak? Are there existing entry points I should use instead?

(Note: Can you share details about your current fifth wheel and any existing camera/monitoring setup?) …more
Ford F53 Chassis Firewall Wiring: Finding Brake LED Through-Holes
Engine Medium 2-3 hours 137 👍

Ford F53 Chassis Firewall Wiring: Finding Brake LED Through-Holes

Opened up my 2022 Holiday Rambler 36DB for spring prep and once again I'm staring at my 2021 Ford F53 chassis firewall wondering where those brake LED through-holes are hiding. I need to run the brake indicator LED wire from my toad to the dashboard inside the motorhome, but I'm having trouble locating the best firewall penetration point.

Rather than drilling a new hole through the firewall (which I'd prefer to avoid for obvious reasons), I'm hoping to find an existing through-hole or grommet that I can utilize. I've heard that Ford F53 chassis typically have several factory access points, but I'm not sure exactly where to look or which ones would be most suitable for this type of low-voltage wiring installation.

Can anyone provide specific guidance on where to find existing firewall through-holes on the F53 chassis that would work well for routing brake indicator wiring? I want to make sure I'm using an appropriate location that won't interfere with existing systems and will provide a clean, professional installation. …more
Complete RV Solar System Guide 2024: Sizing, Installation & Wiring
Solar Batteries Medium 4-8 hours 132 👍

Complete RV Solar System Guide 2024: Sizing, Installation & Wiring

Turned to YouTube for RV solar advice and now I'm more confused than ever - probably a dumb question, but how do I actually size this thing? Could fellow RV owners share details about their current solar setups?

Please provide insights on:
- Total system watts
- Fixed or portable panels
- Rigid or flexible panel types
- Series or parallel wiring configuration
- Total system amps
- System voltage
- Wire gauge used
- Controller type
- Personal pros and cons of your current setup
- What you might change in a future installation

These details will help establish baseline specifications for a fleet installation project. …more
RV Solar Panels Not Charging Battery: Low Amp Troubleshooting Guide
Solar Batteries Medium 45 minutes 131 👍

RV Solar Panels Not Charging Battery: Low Amp Troubleshooting Guide

Installed 400 watts of solar panels on the roof last month but my battery monitor barely shows 2 amps coming in even at peak sun. Wiring looks solid, connections are tight, and the panels tested fine individually. Something between the panels and the battery bank is killing my charge rate. …more
Ford F53 No Spark: Complete Ignition Troubleshooting Guide
Engine Medium 2-4 hours 126 👍

Ford F53 No Spark: Complete Ignition Troubleshooting Guide

Halfway through a cross-country trip, my Ford F53 Class A motorhome with the 7.5L V8 cranks but won't fire, has zero spark, AND left me completely stranded. The issue began intermittently with starting problems, then progressed to a complete no-start condition with zero spark at both the coil and distributor.

I've systematically replaced the distributor, ignition control module (ICM), and coil, but the no-spark condition persists. This is an EFI system without a crank position sensor - my research indicates it relies on the pickup coil within the distributor for ignition timing.

What are the most likely causes for this complete ignition failure, and what diagnostic steps should I follow to isolate the root cause? I need a methodical troubleshooting approach since parts replacement hasn't resolved the issue. …more
Complete Newmar RV Lithium Battery Upgrade: DC-DC Charger and BIM Wiring Guide
Solar Batteries Hard 6-8 hours 123 👍

Complete Newmar RV Lithium Battery Upgrade: DC-DC Charger and BIM Wiring Guide

Staring at my 2019 Newmar's freshly wired lithium upgrade with Victron BVM-712, Orion XS DC-DC charger, and Cerbo GX — finished yesterday but the system still isn't charging properly.

The main issue is I can't figure out how to properly integrate my existing boost switch with the new DC-DC charger setup while maintaining the ability to trickle charge chassis batteries. Currently, my Orion XS DC-DC charger flows only one way from engine alternator to lithium batteries. Should I replace the existing BIM with a LI-BIM, which would be in series with the 2/0 cable? Is there a control wire on the Orion XS that will allow flow from lithium to chassis batteries while on shore/inverter power?

I'm considering adding a 120V battery tender for chassis batteries, but want to confirm what modifications might be needed to my existing BIM. Can someone provide guidance on the correct wiring approach? …more

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How to Install a Lithium Battery Manager Relay in Your RV - Complete Guide
Solar Batteries Medium 2-3 hours 122 👍

How to Install a Lithium Battery Manager Relay in Your RV - Complete Guide

Got my weekend planned to install a lithium battery manager relay in my 1999 Fleetwood American Dream Saturday — what should I have ready beforehand? I understand these relays are crucial for protecting lithium batteries from overcharging by managing the connection to the alternator, but I want to make sure I understand the complete installation process before I start.

I'm looking for detailed information on how these battery manager relays function - specifically how they disconnect the batteries from the alternator when charging isn't needed. More importantly, I need step-by-step guidance on the actual wiring process, including how to properly connect the relay between my alternator/converter and the new lithium battery bank. I'm particularly concerned about getting the fusing right and understanding what control circuits are involved in this setup.

This is a significant electrical modification to my RV's charging system, so I want to ensure I have all the technical details covered before I begin the installation. Any comprehensive guidance on the complete process would be extremely helpful. …more
RV Alternator to Lithium Battery Charging: Complete DC-DC Wiring Guide for Safe Installation
Electrical Hard 4-6 hours 120 👍

RV Alternator to Lithium Battery Charging: Complete DC-DC Wiring Guide for Safe Installation

Last week I picked up my 2007 Holiday Rambler and discovered the previous owner left the alternator-to-battery charging system a dangerous wiring disaster that could destroy my new lithium batteries.

I'm upgrading from four 6V lead-acid house batteries to lithium, and I keep reading conflicting advice about alternator charging. Some people say "just connect it directly," others are warning about alternator damage and proper current limiting. I'm planning to add a DC-to-DC charger eventually, but I'm confused about whether I can safely use the alternator to charge lithium batteries in the meantime.

What's the right way to handle alternator charging with lithium batteries? Should I disconnect the alternator feed completely until I get a proper charging system, or is there a safe way to make this work without turning my alternator into an expensive paperweight? …more
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